magnet:?xt=urn:btih:bc40bafb91f6e95580378743ef4ad73e79e5b4e6&xt=urn:md5:77f117e2a188bf0f0dfd9abacd1069c2&xl=261138&dn=qtserialport-opensource-src-5.4.2.7z&as=https://download.qt.io/new_archive/qt/5.4/5.4.2/submodules/qtserialport-opensource-src-5.4.2.7z&tr=http://bt.qt-project.org:6969/announce